Home / 631,629.20-871,650.48-345,149.28

Finding the Fourth Proportional to 631,629.20, 871,650.48 and 345,149.28

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Solution

The fourth proportional to 631,629.20, 871,650.48 and 345,149.28 is: 476,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,629.20 : 871,650.48 = 345,149.28 : x
  2. Step 2: Convert to fraction form
    631,629.20/871,650.48 = 345,149.28/x
  3. Step 3: Cross multiply
    631,629.20x = 871,650.48 × 345,149.28
  4. Step 4: Simplify right side
    631,629.20x = 300,849,535,583.65
  5. Step 5: Solve for x
    x = 300,849,535,583.65/631,629.20
  6. Step 6: Final answer
    x = 476,307.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.